38840393974 has 4 divisors (see below), whose sum is σ = 58260590964. Its totient is φ = 19420196986.

The previous prime is 38840393957. The next prime is 38840393987. The reversal of 38840393974 is 47939304883.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9710098492 + ... + 9710098495.

It is an arithmetic number, because the mean of its divisors is an integer number (14565147741).

Almost surely, 2^38840393974 is an apocalyptic number.

38840393974 is a deficient number, since it is larger than the sum of its proper divisors (19420196990).

38840393974 is a wasteful number, since it uses less digits than its factorization.

38840393974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19420196989.

The product of its (nonzero) digits is 15676416, while the sum is 58.

The spelling of 38840393974 in words is "thirty-eight billion, eight hundred forty million, three hundred ninety-three thousand, nine hundred seventy-four".